Author
United States. Federal Highway Administration
7
Delaware. Bureau of Archaeology and Historic Preservation
6
Bachman, David C.
5
Custer, Jay F., 1955-
5
Delaware. Division of Highways. Location and Environmental Studies Office
5
Grettler, David J.
4
Delaware Dividion of Highways Location and Environmental Studies Office
2
Heite, Edward F.
2
Heite, Louise B.
2
Jamison, JoAnn
2
Coleman, Ellis C.
1
Delaware Bureau of Archaeology and Historical Preservation
1
Delaware Dept. of Transportation Div. of Highways
1